Quick Response and Adjustable Headband. Fast auto darkening time is less than 1/10000 seconds; Design of turning (up or down) the headband can reduce the fatigue of the welder's head (neck), brings better comfort. The UV/IR protection up to 16 at all time. Higher number is on behalf of less penetrable UV/IR and higher optical grade.Higher the number, greater the protection. Please make sure it is correct. The item "True Color Solar Auto Darkening Welding Helmet Weld Mask for ARC TIG MIG GRIND" is in sale since Saturday, June 13, 2020. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Welding & Soldering Equipment\Welding Equipment & Accessories\Welding Protective Gear\Welding Helmets". The seller is "tooliom" and is located in Walton, Kentucky. This item can be shipped to United States.